| 单词 | lever-fly |
| 释义 | > as lemmaslever-fly lever-fly n. a punching machine worked by a fly-wheel and a lever. ΚΠ 1831 J. Holland Treat. Manuf. Metal I. 131 The holes..are punched in the metal by the assistance of what the boiler makers call a lever fly. < as lemmas |
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